An oxygen generator

Abstract

This utility model discloses an oxygen concentrator, including a shell and a panel on the upper part of the shell. An oxygen outlet pipe is inserted through the panel, and a display screen is provided on the panel. Inside the shell are an air pump, a molecular sieve, a pressure equalization valve, and a circuit board. The display screen, air pump, and pressure equalization valve are connected to the circuit board via wires. The shell has an air inlet, which is connected to the air pump via a pipe. The air pump is connected to the pressure equalization valve via a pipe, the pressure equalization valve is connected to the molecular sieve via a pipe, and the molecular sieve is connected to the oxygen outlet pipe via a pipe. The key feature is that a middle shell surrounding the air pump, molecular sieve, and pressure equalization valve is provided between the shell and the panel. The middle shell has an air inlet on one side and an air outlet on the other side. A cooling fan connected to the circuit board is provided at the air outlet. The shell has a first ventilated area communicating with the air inlet and a second ventilated area aligned with the air outlet. This oxygen concentrator operates with lower noise and better heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of oxygen generation equipment technology, specifically to an oxygen generator. Background Technology

[0002] Oxygen concentrators primarily utilize molecular sieve technology to separate oxygen from the air, offering advantages such as high oxygen production efficiency, low energy consumption, and stable operation. For example, Chinese utility model patent application number CN202510109659.9 discloses an oxygen concentrator that reduces infrared radiation. This includes a casing, with a compressor cover fixedly installed at the bottom of the casing's inner cavity. Both the casing and the compressor cover's inner walls are coated with silver to reduce infrared radiation. An air compression mechanism is installed inside the compressor cover. Two sealing components are fixedly connected to the bottom of the casing's inner cavity, each containing a molecular sieve component. A linkage component is installed inside the sealing components. Two threaded grooves are formed on the top of the casing, and two limiting threaded covers threadedly connected to these grooves are located on the top of the casing. A controller is installed on the top of the casing. However, in actual use, this type of oxygen concentrator generates significant vibration and noise due to the internal components. Furthermore, the internal components generate heat during operation, and this particular oxygen concentrator only has one heat dissipation vent, lacks a proper heat dissipation structure, and does not allow for air convection with the outside environment, resulting in poor heat dissipation. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide an oxygen generator with lower noise and better heat dissipation during operation.

[0004] Therefore, this utility model is implemented using the following technical solution:

[0005] An oxygen generator includes a housing and a panel on the upper part of the housing. An oxygen outlet pipe is inserted through the panel, and a display screen is provided on the panel. An air pump, a molecular sieve, a pressure equalization valve, and a circuit board are disposed inside the housing. The display screen, air pump, and pressure equalization valve are respectively connected to the circuit board via wires. The housing has an air inlet, which is connected to the air pump via a pipe. The air pump is connected to the pressure equalization valve via a pipe, the pressure equalization valve is connected to the molecular sieve via a pipe, and the molecular sieve is connected to the oxygen outlet pipe via a pipe. The generator is characterized by: a middle housing surrounding the air pump, molecular sieve, and pressure equalization valve is disposed between the housing and the panel. The middle housing has an air inlet on one side and an air outlet on the other side. A cooling fan connected to the circuit board is provided at the air outlet. The housing has a first ventilated area communicating with the air inlet, and a second ventilated area aligned with the air outlet.

[0006] Furthermore, the middle housing includes a left cover, a right cover, and a base. The base is provided with a first slot. After the left cover and the right cover abut against each other, their lower ends are inserted into the first slot. The air pump, molecular sieve, and pressure equalization valve are arranged in the space enclosed by the left cover, the right cover, and the base.

[0007] Furthermore, the outer walls of the left and right covers are provided with a number of vertical ribs that abut against the inner wall of the outer shell. There are two air inlets, one located on the left cover and the other on the right cover. The first ventilation area includes multiple rows and columns of vertical ventilation holes on one side of the outer shell. The first ventilation area is offset from the air inlet, and the vertical rib between the first ventilation area and the air inlet is provided with a first opening for connecting the vertical ventilation holes and the air inlet. The second ventilation area includes multiple rows and columns of vertical ventilation holes on the other side of the outer shell.

[0008] Furthermore, the upper left and right sides of the left and right covers are provided with elastic buckles, the outer shell is provided with a snap-fit ​​opening that engages with the elastic buckles, the bottom of the outer shell is provided with multiple through holes aligned with the base, and the outer shell is provided with a strip surrounding the through holes, with an anti-slip pad pasted inside the strip.

[0009] Furthermore, the right cover is provided with a second opening, and the left and right inner walls of the second opening are provided with second slots for inserting circuit boards. The circuit boards are connected to multiple control buttons that protrude from the outer shell, and the circuit boards are connected to power connectors that pass through the right cover and protrude from the panel. The power connectors are connected to an external power source through a power cord.

[0010] Furthermore, the base is provided with a silencer box aligned with the lower end of the air pump. The silencer box is provided with a first connector and multiple second connectors. The first connector is connected to the air inlet through a pipe. The lower end of the air pump is provided with multiple third connectors aligned with the second connectors. The third connectors and the second connectors are connected through a pipe. The lower end of the air pump is also provided with multiple fourth connectors. The fourth connectors are connected to the inlet of the equalizing valve through a pipe. The molecular sieve and the equalizing valve are respectively fixed to the base with multiple bolts. The molecular sieve is provided with a fifth connector. The fifth connector is connected to the outlet of the equalizing valve through a pipe. The molecular sieve is provided with a sixth connector. The sixth connector is connected to the oxygen outlet pipe through a pipe. The oxygen outlet pipe passes through the left cover and extends out of the panel.

[0011] Furthermore, the air pump is fitted with an air pump cover, and multiple first columns are provided on both sides of the air pump cover. The base is provided with second columns aligned with the first columns, and the first and second columns aligned with each other are fixed by a silicone tube.

[0012] Furthermore, the right cover is provided with a groove aligned with the air inlet, and a seventh connector is provided at the bottom of the groove. The seventh connector is connected to the first connector of the silencer box through a pipe. Filter cotton is provided in the groove, and the air inlet is provided with a cover that can be detached by a buckle. The cover has multiple rows and columns of round holes.

[0013] After adopting the above technical solution, the middle shell surrounds the air pump, molecular sieve, and pressure equalization valve, which can reduce the noise emitted by the air pump, molecular sieve, and pressure equalization valve when they are working, making the oxygen concentrator quieter. In addition, when the oxygen concentrator is working, the cooling fan starts to exhaust the heat generated by the air pump, molecular sieve, pressure equalization valve, and circuit board in the middle shell through the air outlet. Outside air enters the outer shell and middle shell through the first ventilation area and the air inlet, and is then exhausted through the cooling fan from the air outlet and the second ventilation area, so that the air inside the middle shell and the outside air are convection, resulting in better heat dissipation. Attached Figure Description

[0014] The present invention includes the following figures:

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another viewpoint;

[0017] Figure 3 This is a three-dimensional structural diagram of the bottom of the present invention with the anti-slip pad removed;

[0018] Figure 4 This is a three-dimensional structural diagram of the present invention without the panel.

[0019] Figure 5 This is a three-dimensional structural diagram of the present invention without the panel and outer shell.

[0020] Figure 6 This is a three-dimensional structural diagram of the present invention from another viewpoint, with the panel and outer shell removed;

[0021] Figure 7 This is a side view of the present invention with the panel, outer shell and middle shell removed (to clearly show the internal structure, all connecting pipes and wires have been removed);

[0022] Figure 8 This is a front view of the present invention with the panel, outer shell and middle shell removed (to clearly show the internal structure, all connecting pipes and wires have been removed).

[0023] Reference numerals: 1. Outer shell; 2. Panel; 3. Oxygen outlet pipe; 4. Display screen; 5. Air pump; 6. Molecular sieve; 7. Pressure equalizing valve; 8. Circuit board; 9. Air inlet; 10. Middle shell; 11. Air inlet; 12. Air outlet; 13. Cooling fan; 14. First ventilation area; 15. Second ventilation area; 16. Left cover; 17. Right cover; 18. Base; 19. Vertical rib; 20. First opening; 21. Elastic buckle; 22. Bayonet; 23. Through hole; 24. Enclosure strip; 25. Second opening; 26. Second slot; 27. Control button; 28. Power socket; 29. ​​Silencing box; 30. First connector; 31. Second connector; 32. Third connector; 33. Fourth connector; 34. Fifth connector; 35. Air pump cover; 36. First column; 37. Second column; 38. Silicone tube; 39. Groove; 40. Cover; 41. Round hole; 42. Buckle. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] Referring to the above-mentioned figures, the oxygen generator provided by this utility model includes a shell 1 and a panel 2 on the upper end of the shell 1. An oxygen outlet pipe 3 is provided through the upper panel 2, and a display screen 4 is provided on the panel 2. An air pump 5, a molecular sieve 6, a pressure equalization valve 7, and a circuit board 8 are provided inside the shell 1. The display screen 4, air pump 5, and pressure equalization valve 7 are respectively connected to the circuit board 8 via wires. The shell 1 has an air inlet 9, which is connected to the air pump 5 via a pipe. The air pump 5 is connected to the pressure equalization valve 7 via a pipe. The pressure equalization valve 7 is connected to the molecular sieve via a pipe. The molecular sieve is connected to the oxygen outlet pipe 3 via a pipe. The characteristic feature is that a middle shell 10 is provided between the shell 1 and the panel 2, surrounding the air pump 5, molecular sieve 6, and pressure equalization valve 7. The panel 2 and the middle shell 10 are bonded together, and one side of the middle shell 10... The system has an air inlet 11 on one side and an air outlet 12 on the other. A cooling fan 13 connected to the circuit board 8 is located at the air outlet 12. The outer shell 1 has a first ventilation area 14 communicating with the air inlet 11, and a second ventilation area 15 aligned with the air outlet 12. The middle shell 10 includes a left cover 16, a right cover 17, and a base 18. The base 18 has a ring of first slots. The lower ends of the left cover 16 and right cover 17 are inserted into the first slots after they abut against each other. The air pump 5, molecular sieve 6, and pressure equalizing valve 7 are located within the space enclosed by the left cover 16, right cover 17, and base 18. The outer walls of the left cover 16 and right cover 17 have several vertical ribs 19 that abut against the inner wall of the outer shell 1. There are two air inlets 11. One is located on the left cover 16, and the other is located on the right cover 17. The first ventilation area 14 includes multiple rows and columns of vertical ventilation holes on one side of the outer shell 1. The first ventilation area 14 is offset from the air inlet 11, and the vertical rib 19 between the first ventilation area 14 and the air inlet 11 has a first opening 20 for connecting the vertical ventilation holes and the air inlet 11. The second ventilation area 15 includes multiple rows and columns of vertical ventilation holes on the other side of the outer shell 1. The upper left and right sides of the left and right covers 21 are provided with elastic buckles 21. The outer shell 1 has a snap-fit ​​22 for engaging with the elastic buckles 21. The bottom of the outer shell 1 has multiple through holes 23 aligned with the base 18, and the outer shell 1 has a surrounding strip 24 that surrounds the through holes 23. The surrounding strip 24 is glued inside. A non-slip mat is attached. The right cover 17 has a second opening 25. The left and right inner walls of the second opening 25 are provided with second slots 26 for inserting the circuit board 8. The circuit board 8 is connected to multiple control buttons 27 that protrude from the panel 2. The circuit board 8 is also connected to a power socket 28 that passes through the right cover 17 and out of the outer shell 1. The power socket 28 is connected to an external power source via a power cord. The base 18 is provided with a silencer box 29 aligned with the lower end of the air pump 5. The silencer box 29 is provided with a first connector 30 and multiple second connectors 31. The first connector 30 is connected to the air inlet 9 via a pipe. The lower end of the air pump 5 is provided with multiple third connectors 32 aligned with the second connectors 31. The third connectors 32 and the second connectors 31 are connected via pipes. The lower end of the air pump 5 is also provided with multiple fourth connectors 33.The fourth connector 33 is connected to the inlet of the equalizing valve 7 via a pipe. The molecular sieve and the equalizing valve 7 are respectively fixed to the base 18 by multiple bolts. The molecular sieve has a fifth connector 34, which is connected to the outlet of the equalizing valve 7 via a pipe. The molecular sieve also has a sixth connector, which is connected to the oxygen outlet pipe 3 via a pipe. The oxygen outlet pipe 3 passes through the left cover 16 and extends out of the panel 2. The air pump 5 is fitted with an air pump cover 35. Multiple first pillars 36 are provided on both sides of the air pump cover 35. The base 18 has second pillars 37 aligned with the first pillars 36. The aligned first pillars 36 and second pillars 37 are fixed by a silicone tube 38. The right cover 17 has a groove 39 aligned with the air inlet 9. A seventh connector is provided at the bottom of the groove 39. The seventh connector is connected to the first connector 30 of the silencer box 29 via a pipe. Filter cotton is provided inside the groove 39. The air inlet 9 is detachably fitted with a cover 40 via a buckle 42. The cover 40 has multiple rows of round holes 41.

[0026] In this embodiment, the middle shell 10 surrounds the air pump 5, molecular sieve 6, and pressure equalization valve 7, which can reduce the noise emitted by the air pump 5, molecular sieve 6, and pressure equalization valve 7 when they are working, making the oxygen generator quieter. In addition, when the oxygen generator is working, the cooling fan 13 starts to exhaust the heat generated by the air pump 5, molecular sieve 6, pressure equalization valve 7, and circuit board 8 inside the middle shell 10 through the air outlet 12. Outside air enters the outer shell 1 and the middle shell 10 through the first ventilation area 14 and the air inlet 11, and then is exhausted from the air outlet 12 and the second ventilation area 15 through the cooling fan 13, so that the middle shell 10 and the outside air form convection, resulting in better heat dissipation. The slot design facilitates the assembly of the left cover 16, right cover 17, and base 18. The air pump 5, molecular sieve 6, and pressure equalizing valve 7 are positioned within the space enclosed by the left cover 16, right cover 17, and base 18, completely surrounding the air pump 5, molecular sieve 6, and pressure equalizing valve 7 to ensure the oxygen generator's noise reduction effect. The first opening 20 allows the vertical vent hole to communicate with the air inlet 11. The two air inlets 11 facilitate air entry into the middle casing 10, ensuring sufficient airflow. The first venting area 14 is offset from the air inlet 11 to prevent internal noise from directly passing through the air inlet 11 and vertical vent hole, thus extending the noise transmission path and attenuating the noise. Both area 14 and the second ventilation area 15 have multiple rows and columns of vertical ventilation holes to ensure airflow while preventing debris from entering the outer casing 1. The anti-slip pad prevents the oxygen concentrator from sliding after placement. The middle casing 10 is fastened to the outer casing 1 by elastic buckles 21 and snaps 22. To disassemble, peel off the anti-slip pad on the panel 2, then press several elastic buckles 21 simultaneously to disengage it from the snaps 22. Insert the push rod into the through hole 23 to push out the base 18, left cover 16, and right cover 17, and the middle casing 10 can be removed. The second slot 26 facilitates the assembly of the circuit board 8. The silencer box 29 reduces the noise generated when air is drawn in by the air pump 5. The pipe between the silencer box 29 and the air pump 5 not only transports gas but also supports the air pump 5. The air pump cover 35 reduces the vibration and noise generated when the air pump 5 is working. The first column 36, the second column 37, and the silicone tube 38 support the air pump cover 35 and the air pump 5. The silicone tube 38 buffers the vibration generated when the air pump 5 is working and reduces the transmission of the vibration. The groove 39 and the filter cotton filter dust and solid impurities in the air, preventing dust and solid impurities from entering the internal structure and pipes, thus increasing the service life of the oxygen generator. The cover 40 is removable by the buckle 42, making it easy to replace the filter cotton.

[0027] The working principle of this utility model is as follows:

[0028] When the air pump 5 operates, external air enters the groove 39 through the round hole 41 of the cover 40. The air is filtered by the filter cotton and enters the air inlet 9. It then enters the silencer box 29 through the first connector 30 and the pipe. After passing through the silencer box 29, the air enters the air pump 5 through the second connector 31 and the pipe. The air pump 5 generates air pressure and enters the pressure equalization valve 7 through the fourth connector 33 and the pipe. After passing through the pressure equalization valve 7, the air enters the molecular sieve 6 through the pipe. The air passes through the molecular sieve 6 and utilizes its adsorption properties to adsorb nitrogen and other impurity gases in the air, thereby separating out oxygen with higher purity. The oxygen enters the oxygen outlet connector 3 through the sixth connector and the pipe and is then output.

Claims

1. An oxygen generator, comprising a housing and a panel at the upper end of the housing, the panel having an oxygen outlet pipe, and a display screen on the panel; the housing containing an air pump, a molecular sieve, a pressure equalization valve, and a circuit board; the display screen, air pump, and pressure equalization valve being connected to the circuit board via wires; the housing having an air inlet, the air inlet being connected to the air pump via a pipe, the air pump being connected to the pressure equalization valve via a pipe, the pressure equalization valve being connected to the molecular sieve via a pipe, and the molecular sieve being connected to the oxygen outlet pipe via a pipe, characterized in that: Between the outer shell and the panel is a middle shell surrounding the air pump, molecular sieve and pressure equalization valve. The middle shell has an air inlet on one side and an air outlet on the other side. A cooling fan connected to the circuit board is provided at the air outlet. The outer shell has a first ventilated area communicating with the air inlet, and the outer shell also has a second ventilated area aligned with the air outlet.

2. The oxygen generator according to claim 1, characterized in that: The middle housing includes a left cover, a right cover, and a base. The base is provided with a first slot. After the left cover and the right cover abut against each other, their lower ends are inserted into the first slot. The air pump, molecular sieve, and pressure equalization valve are arranged in the space enclosed by the left cover, the right cover, and the base.

3. The oxygen generator according to claim 2, characterized in that: The outer walls of the left and right covers are provided with a number of vertical ribs that abut against the inner wall of the outer cover. There are two air inlets, one located on the left cover and the other on the right cover. The first ventilation area includes multiple rows and columns of vertical ventilation holes on one side of the outer cover. The first ventilation area is offset from the air inlet, and the vertical rib between the first ventilation area and the air inlet is provided with a first opening for connecting the vertical ventilation holes and the air inlet. The second ventilation area includes multiple rows and columns of vertical ventilation holes on the other side of the outer cover.

4. The oxygen generator according to claim 2 or 3, characterized in that: Both the upper left and right sides of the left and right covers are provided with elastic buckles. The outer shell is provided with a snap-fit ​​opening that engages with the elastic buckles. The bottom of the outer shell is provided with multiple through holes aligned with the base. The outer shell is also provided with a strip surrounding the through holes, and an anti-slip pad is pasted inside the strip.

5. The oxygen generator according to claim 4, characterized in that: The right cover has a second opening, and the left and right inner walls of the second opening are provided with second slots for inserting circuit boards. The circuit boards are connected to multiple control buttons that protrude from the outer shell. The circuit boards are also connected to power connectors that pass through the right cover and protrude from the panel. The power connectors are connected to an external power source via a power cord.

6. The oxygen generator according to claim 4, characterized in that: The base is equipped with a silencer box aligned with the lower end of the air pump. The silencer box has a first connector and multiple second connectors. The first connector is connected to the air inlet through a pipe. The lower end of the air pump has multiple third connectors aligned with the second connectors. The third connectors and second connectors are connected through a pipe. The lower end of the air pump also has multiple fourth connectors. The fourth connectors are connected to the inlet of the equalizing valve through a pipe. The molecular sieve and the equalizing valve are respectively fixed to the base with multiple bolts. The molecular sieve has a fifth connector. The fifth connector is connected to the outlet of the equalizing valve through a pipe. The molecular sieve has a sixth connector. The sixth connector is connected to the oxygen outlet pipe through a pipe. The oxygen outlet pipe passes through the left cover and extends out of the panel.

7. The oxygen generator according to claim 6, characterized in that: The air pump is fitted with an air pump cover, and multiple first columns are provided on both sides of the air pump cover. The base is provided with second columns aligned with the first columns. The first and second columns aligned with each other are fixed by a silicone tube.

8. The oxygen generator according to claim 6, characterized in that: The right cover has a groove aligned with the air inlet. A seventh connector is located at the bottom of the groove. The seventh connector is connected to the first connector of the silencer box via a pipe. Filter cotton is provided in the groove. The air inlet is detachably covered by a buckle. The cover has multiple rows and columns of round holes.

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